Headlamp cleaning system, function - GF82.15-P-3000GM

MODEL 164.1 as of model year 09/YoM 08 model refinement package with CODE (600) Headlamp cleaning system 

MODEL 164.8, 251.0/1 as of model year 09/YoM 08 with CODE (600) Headlamp cleaning system 

Function requirements, general 

• C. 15R On
• Low beam switched on

Headlamp cleaning system, general 

The headlamp cleaning system cleans the headlamps automatically.

Function sequence for headlamp cleaning system 

After five washing requests from the combination switch (S4) the front SAM control unit (N10) automatically actuates the HCS pump (M5/2). The HCS pump is actuated again after five washing requests from the combination switch.

The number of washing requests is determined by a counter in the front SAM control unit.

The counter is reset automatically when the five washing requests are performed, manually by switching off c. 15 or by switching off the low beams.

The status of the combination switch is read in by the steering column tube module (N80), routed to the interior CAN via the central gateway control unit (N93) and read in by the front SAM control unit.

The status of the rotary light switch (S1) is read in via the instrument panel LIN by the upper control panel control unit(N72/1) and is relayed to the front SAM control unit via the interior CAN.

	Electrical system function schematic for headlamp cleaning system (HCS)	Model 164	PE82.15-P-2050-97MAA
		Model 251	PE82.15-P-2050-97RAA
	Front SAM control unit, component description	N10	GF54.21-P-7010GM
	Upper control panel control unit, component description	N72/1	GF54.21-P-6040GM
	Component description for the EZS control unit	N73	GF80.57-P-6003GM
	Component description for the steering column module control unit	N80	GF54.21-P-6051GM
	Central gateway control unit, component description	N93	GF54.21-P-4170GM